//
//  WBNetworkManager+Extension.swift
//  tom微博
//
//  Created by tom king on 2017/8/26.
//  Copyright © 2017年 tom king. All rights reserved.
//

import Foundation

// MARK: - 封装新浪微博的网络请求方法
extension WBNetworkManager {
    
    /// 加载微博数据字典数组
    ///   - since_id: 返回 ID 比 since_id 大的微博（即比 since_id 时间晚的微博），默认为0
    ///   - max_id: 返回 ID 小于或等于 max_id 的微博，默认为 0
    /// - Parameter completion: 完成回调[list: 微博字典数组/是否成功]
    func statusList(since_id: Int64 = 0, max_id: Int64 = 0, completion: @escaping (( list: [[String: AnyObject]]?, isSuccess: Bool))->()) {
        
        let urlString = "https://api.weibo.com/2/statuses/home_timeline.json"
        
        // swift 中 Int 可以转换成 AnyObject 但是 Int64 不能
        let params = ["since_id": "\(since_id)","max_id": "\(max_id > 0 ? max_id - 1 : 0)"]
        
        tokenRequest(URLString: urlString, parameters: params as [String : AnyObject]) { (json, isSuccees) in
            
            
            // 从 json 中获取 statuses 字典数组
            // 如果   as? 失败， result = nil
            // 提示： 服务器返回的字典数组，就是按照时间的倒序排序的
            let result = json?["statuses"] as? [[String: AnyObject]]
            completion((list: result, isSuccess: isSuccees))

        }

    }
    
    /// 返回微博的未读数量 - 定时刷新，不需要提示是否失败
    func unreadCount(completion: @escaping (_ count: Int)->()) {
        guard let uid = userAccount.uid else {
            return
        }
        let urlString = "https://rm.api.weibo.com/2/remind/unread_count.json"
        let params = ["uid": uid]
        tokenRequest(URLString: urlString, parameters: params as [String : AnyObject]) { (json, isSuccess) in
            let dict = json as? [String: AnyObject]
            let count = dict?["status"] as? Int
            
            completion(count ?? 0)
            
        }
    }

}

// MARK: - 用户信息
extension WBNetworkManager {
    
    /// 加载用户信息 - 用户登录后立即执行
    func loadUserInfo(completion: @escaping (_ dict: [String: AnyObject])->()) {
        guard let uid = userAccount.uid else {
            return
        }
        let urlString = "https://api.weibo.com/2/users/show.json"
        let params = ["uid": uid]
        
        // 发起网络请求
        tokenRequest(URLString: urlString, parameters: params as [String : AnyObject]) { (json, isSuccess) in
            
            // 完成回调
            completion(json as? [String: AnyObject] ?? [:])
        }
    }
}

// MARK: - OAuth 相关方法
extension WBNetworkManager {
    
    /// 提问：网络请求异步到底应该返回什么， -需要什么返回什么-
    /// 加载 accessToken
    ///
    /// - Parameters:
    ///   - code: 授权码
    ///   - completion: 完成回调[是否成功]
    func LoadAccessToken (code: String, completion: @escaping (_ isSuccess: Bool)-> ()){
        
        let urlString = "https://api.weibo.com/oauth2/access_token"
        let params = ["client_id":WBAppKey,
                      "client_secret":WBAppSecret,
                      "grant_type":"authorization_code",
                      "code":code,
                      "redirect_uri":WBRedirectURI]
        // 发起网络请求
        request(method: .POST, URLString: urlString , parameters: params as [String : AnyObject]) { (json, isSuccess) in
//            print(json ?? " json none")
            
            // 如果请求失败，对用户账户数据不会造成任何影响
            // 直接用字典设置 userAccount 的属性
            self.userAccount.yy_modelSet(with: json as? [String: AnyObject] ?? [:])
            print(self.userAccount)
            
            
            // 加载当前用户信息
            self.loadUserInfo(completion: { (dict) in
                // 使用用户信息字典设置用户账户信息（昵称和头像地址）
                self.userAccount.yy_modelSet(with: dict)
                
                // 保存模型
                self.userAccount.saveAccount()
                
                print(self.userAccount)
                
                // 用户信息加载完成，再完成回调
                completion(isSuccess)
            })
            
            
        }
    }
}
